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iOS Object-Oriented Swift 2.0 Class Inheritance Creating a Subclass

Ben Masel
Ben Masel
2,004 Points
Posted by Ben Masel
Ben Masel
2,004 Points

Plz help with this code challenge, I am VERY confused

I am only 11 yrs old and having trouble with swift, i want to keep doing Treehouse but i might not be able to cope! Please help me with inheritance and sub classes and plz help finish this Code Challenge, Also what is an instance again? I always forget. Thnx

classes.swift 
class Vehicle {
    var numberOfDoors: Int
    var numberOfWheels: Int

    init(withDoors doors: Int, andWheels wheels: Int) {
        self.numberOfDoors = doors
        self.numberOfWheels = wheels
    }
}

// Enter your code below
class Car: Vehicle {
var numberOfSeats: Int = 4
let someCar = ???
}

2 Answers

John Roque Jorillo
John Roque Jorillo
13,117 Points
John Roque Jorillo
John Roque Jorillo
13,117 Points

class Car: Vehicle { var numberOfSeats: Int = 4 }

let someCar = Car(withDoors: 4, addWheels: 4)

Here, hope this will help.

11 years old?!! keep it up.

Paul Karim
Paul Karim
3,428 Points
Paul Karim
Paul Karim
3,428 Points

Well in your code challenge you have a class named Car right? Well when you create an object using that class that object becomes an "instance" of the Car class. So, let lamborghini = Car(withDoors: 2, andWheels: 4), the constant lamborghini would be the instance.

Hope that helps with your instance question :)

EDIT: Also, in your code challenge the let someCar = Car(withDoors: 4, andWheels: 4 ) needs to be outside of the Car classes code block. So type it after the last }